Jake “The Bachelor” Pavelka cheated on Vienna after they got engaged while filming the ABC show, RadarOnline.com has learned exclusively.

Jake contacted his ex-girlfriend the day after taping wrapped, a source told RadarOnline.com. During the next few weeks he tried to convince his ex that he still loved her and the women on the show – including Vienna – meant nothing to him, the source claims.

When he left to tape The Bachelor, Jake left his relationship with his girlfriend on hold. She thought they were still “on” and he was just trying to forward his acting career. But when taping was over and Jake was engaged, his ex was shocked when he started calling her again.

Phone calls led to an in person meeting. The source told RadarOnline.com that it was all very secretive due to Jake’s situation. Jake and the ex did not have sex but he told her he loved her – a twist that certainly will not make Vienna happy! Jake and his ex’s conversations were intimate and left no doubt that he wanted to be with her.